Which is cheaper, the Grand Seiko STGK007 or the Yema Navygraf Marine Nationale Quartz?

At MSRP the Yema Navygraf Marine Nationale Quartz is the cheaper of the two at $499, against $6,200 for the Grand Seiko STGK007 — a $5,701 gap before any retailer discounting.

Which is bigger, the Grand Seiko STGK007 or the Yema Navygraf Marine Nationale Quartz?

The Yema Navygraf Marine Nationale Quartz wears larger at 39mm versus 27.8mm for the Grand Seiko STGK007 — a 11.2mm difference across the dial.

Which has a longer power reserve, the Grand Seiko STGK007 or the Yema Navygraf Marine Nationale Quartz?

The Grand Seiko STGK007 carries a 50-hour power reserve against 40 hours on the Yema Navygraf Marine Nationale Quartz.

What movement does the Grand Seiko STGK007 run compared to the Yema Navygraf Marine Nationale Quartz?

The Grand Seiko STGK007 runs a automatic caliber (9S27), while the Yema Navygraf Marine Nationale Quartz runs a quartz.

Side by side

Grand Seiko STGK007vsYema Navygraf Marine Nationale Quartz

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

Grand Seiko STGK007

stgk007g

MSRP $6,200

Yema Navygraf Marine Nationale Quartz

yema-navygraf-marine-nationale-quartz-ymhfmn39

MSRP $499

At a glance

12 of 29 specs differ

Diameter

STGK00727.8mm

Navygraf Marine Nationale Quartz39mm

Power Reserve

STGK00750h

Navygraf Marine Nationale Quartz40h

Water Resistance

STGK007100m

Navygraf Marine Nationale Quartz100m

MSRP

STGK007$6,200

Navygraf Marine Nationale Quartz$499

Full specifications

Case

6 specs

Crystal & Dial

2 specs

AR Coating

Yes

Inner

Dial Color

Black

Standard

Movement

3 specs

Caliber

9S27

—

Type

Automatic

Quartz

Power Reserve

50h

40h

Pricing

1 specs

MSRP

$6,200

$499

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